The contact owns a 2013 Acura ILX. The contact received notification of NHTSA Campaign Number: 20V770000 (Power Train); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while depressing the brake pedal, the vehicle failed to immediately come to a stop. The contact had to depress the brake pedal extremely hard to stop the vehicle. The brake warning light was illuminated. The dealer was contacted and confirmed that the part to do the recall repair was not yet available. The vehicle was taken to a certified mechanic who diagnosed the vehicle and determined that the brakes had failed and needed to be replaced. The vehicle was repaired. The manufacturer was not made aware of the failure. The failure mileage was 83,000. Parts distribution disconnect.